A heinous, but useful microsoft tool for putting together presentations of slides/viewgraphs.
This little piece of sh -- I mean, software comes with MS Office and it features creepy templates and clipart, your helpful friend Clippit and strategic incompatibilities with previous versions of itself.
It masquerades as a graphics program, but cannot touch Adobe in any way shape or form, so it is instead as annoyingly incompatible with Adobe as possible.
Also, it will HOG all your SWAP SPACE.
Bastard.

Person: Instead of doing real technical work, I spent all day making powerpoint slides out of my results, only to have the software freeze my computer after a few hours.